The Oral Cavity

Question 1

Congenital/developmental lesion of the mucosal area

Answer 1

Hemangioma
Lymphangioma/ cystic hygroma
Lingual thyroid tissue

Question 2

Inflammatory lesion of the mucosal area

Answer 2

Ludwig’s angina/ cellulitis*

Odontogenic infection

Question 3

Benign tumor of the mucosal area

Answer 3

Benign mixed tumor of the minor salivary gland origin

Question 4

Malignant tumor of the mucosal area

Answer 4

Squamous cell carcinoma*

Minor salivary gland malignancy

Question 5

Pseudotumor of the sublingual space

Answer 5

Hypoglossal nerve motor atrophy

Question 6

Congenital/ developmental lesion of the sublingual space

Answer 6

Hemangioma
Lymphangioma/ cystic hygroma
Epidermoid/dermoid*
Lingual thyroid tissue

Question 7

Inflammatory lesion of the sublingual space

Answer 7

Ludwig’s angina/ cellulitis
Abscess
Dilated submandibular gland duct secondary to stenosis or calculus*
Ranula, simple or diving

Question 8

Benign tumor of the sublingual space

Answer 8

Benign mixed tumor of sublingual gland origin

Question 9

Malignant tumor of the sublingual space

Answer 9

Squamous cell carcinoma invading anteriorly from the tongue base or inferiorly from the mucosal surface of the oral tongue*

Sublingual gland malignant tumor
Adenoid cystic carcinoma
Mucoepidermoid carcinoma

Question 10

Pseudotumor of the submandibular space

Answer 10

Cranial nerve V3 motor atrophy (anterior belly of digastric muscle and mylohyoid muscle and infiltrated by fat)

Question 11

Congenital/ development lesion of the submandibular space

Answer 11

Second branchial cleft cyst*
Suprahyoid thyroglossal duct cyst
Cystic hygroma/ lymphangioma*
Hemangioma*

Question 12

Inflammatory lesion of the submandibular space

Answer 12

Ludwig's angina
Reactive adenopathy*
Cellulitis or abscess*
Submandibular gland inflammation (ductal stenosis, calculus, tumor)
Diving ranula

Question 13

Benign tumor of the submandibular space

Answer 13

Lipoma*
Epidermoid/dermoid
Benign mixed tumor of the submandibular gland
Tail of parotid pedunculated benign tumor (benign mixed tumor or Warthin’s)

Question 14

Malignant tumor of the submandibular space

Answer 14

Nodal metastasis of squamous cell carcinoma of the face and oral cavity*
Nodal lymphoma
Submandibular gland malignancy (adenoid cystic carcinoma, mucoepidermoid carcinoma)
Direct invasion by squamous cell carcinoma of the oral cavity

*Notes:
Mets by SCCA

Question 15

Most common benign mandibular tumor

Answer 15

Ameloblastoma

Question 16

Most common cystic lesion of the mandible

Answer 16

Radicular cyst (referring to the root)

Globular cyst at the root or apex of a devitalized tooth

Question 17

This is a well circumscribed radiolucent lesion that develops around the crown of an impacted or unerupted tooth

Answer 17

Dentigerous cyst (follicular cyst)

Question 18

Cyst containing keratin

Unilocular or multilocular cyst with sharply demarcated borders

Adjacent to the third molar

Rapidly growing

Answer 18

Odontogenic keratocyst

Question 19

Unilocular or multilocular radiolucent cyst containing variable amounts of calcified material

Answer 19

Calcified odontogenic cyst

Occurs in the maxilla 70% of cases

Question 20

Cyst that continues to grow after a tooth is extracted

Answer 20

Residual cyst

Question 21

Cyst that develops from the tooth primordia in the third molar location

Indistinguishable from a residua cyst

Answer 21

Primordial cyst

Question 22

Cyst the can extend to the alveolar ridge without bone disruption

Answer 22

Traumatic bone cyst